#urinary_tract__urinarytract  the organs and tubes involved in the production and excretion of urine
  supertype:  tract  a system of body parts that together serve some particular purpose
  part of:  urogenital_system
  part:  kidney  either of two bean-shaped excretory organs that filter wastes (especially urea) from the blood and excrete them and water in urine; urine passes out of the kidney through ureters to the bladder
     part:  nephron__uriniferous_tubule__uriniferoustubule  any of the small tubules that are the excretory units of the vertebrate kidney
        part:  malpighian_body__malpighian_corpuscle__renal_corpuscle__renalcorpuscle  the capsule that contains Bowman's capsule and a glomerulus at the expanded end of a nephron
           part:  Bowman's_capsule__glomerular_capsule__capsula_glomeruli__capsulaglomeruli  thin double membrane surrounding the glomerulus of a nephron
           part:  glomerulus  a small intertwined group of capillaries in the malpighian body; glomeruli filter blood during urine formation
     part:  adrenal_gland__adrenalgland__adrenal__suprarenal_gland  either of a pair of complex endocrine glands situated near the kidney
        part:  adrenal_cortex__adrenalcortex  the cortex of the adrenal gland; secretes corticosterone and sex hormones
        part:  adrenal_medulla__adrenalmedulla  the medulla of the adrenal gland; secretes epinephrine
     part:  arcuate_artery_of_the_kidney  curved arteries of the kidney
     part:  renal_artery__renalartery__arteria_renalis  an artery originating from the abdominal aorta and supplying the kidneys and adrenal glands and ureters
     part:  arcuate_vein_of_the_kidney__vena_arcuata_renis  veins that receive blood from interlobular veins of kidney and rectal venules
     part:  renal_vein__renalvein__vena_renalis  veins that accompany renal arteries; open into the vena cava at the level of the 2nd lumbar vertebra
     part:  venae_interlobulares_renis  interlobular veins of the kidney; receive blood from the arcuate vein and empty into the renal veins
     part:  venae_renis__venaereni  veins of the kidney; drain the kidney into the renal vein
     part:  renal_cortex__renalcortex  the cortex of the kidney containing the glomeruli and the convoluted tubules
     part:  renal_pelvis__pelvis  a structure shaped like a funnel in the outlet of the kidney into which urine is discharged before passing into the ureter
  part:  urinary_bladder__urinarybladder  a membranous sac for temporary retention of urine
     part:  bladder_sphincter__bladdersphincter__musculus_sphincter_vesicae  the sphincter muscle of the urinary bladder; made up of a thickened muscular layer of bladder around the urethral opening
  part:  ureter  either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder
  part:  urethra  duct through which urine is discharged in most mammals and which serves as the male genital duct
     part:  urethral_orifice__external_orifice  the orifice through which urine is discharged
     part:  urethral_sphincter__musculus_sphincter_urethrae  a striated sphincter muscle that constricts the urethra

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